I have one of the volumes, and have been trying to find the other.
I believe there is a new guidebook, by another author, forthcoming, but I didn't save the information.
Perhaps the most exciting journey on the Tennessee was in about 1780, when a large party of flatboats started on the Holston River, proceeded past the future site of Chattanooga, where they were attacked by indians, ran the long series of shoals near present day Muscle (mussel) shoals (aided by high water in early spring), continued to the Ohio River, poled and roped up to the mouth of the Cumberland, and, except for a party who stopped at the mouth of the Red (future site of Clarkesville), and then proceeded to the future site of Nasheville, where they met settlers who had come overland.
In that party was a 15 year old girl who later married Andrew Jackson.
I have links to better accounts of the journey, which makes "African Queen" seem tiny by comparison.